Please can someone help me. I am unable to build any of the wallets as my Ubuntu 16,04 system complains about BIGNUM problems. I understand that there are openssl issues, but I have tried everything. I can build other coins joule, zeta, maza, a whole lot of them. They all build ok, but I cannot rebuild this one. I already have a wallet but I upgraded to ubuntu 18.04 and thought I would build the new wallet 1.5.1. I then could not and was suggested that I downgrade ssl. I tried everything then went back to ubuntu 16.04, all other coins are building fine and work great apart from this one. Originally I have a version that I cloned from github that had a structure DEM/eMark, but I have never been able to get this to compile ever again.